NASA will hold two consecutive media briefings today beginning at 3 p.m. EST to address general questions from media concerning astronauts, their selection and screening, flight training and other matters.

The briefings will originate from NASA Headquarters and from the Johnson Space Center in Houston. They will be broadcast live on NASA Television and the agency’s Internet homepage.

Questions will be taken from media representatives at participating NASA field centers. For NASA TV downlink, schedules and streaming video information, visit: